Ultrasonic transducer
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United States of America Patent
Stats
-
Aug 10, 1982
Grant Date -
N/A
app pub date -
May 8, 1981
filing date -
May 8, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrasonic signal transducer is characterized in that the piezoelectrically active element has a first unitary electrode over the entire surface of one face and a matrix of a plurality of individual electrodes on the opposite face. In the receive mode, such an arrangement effectively constitutes a plurality of individual transducers arranged in the matrix array while maintaining the efficacy of a unitary structure. The signals from the individual electrodes are individually amplified, full-wave rectified, and combined additively to produce a composite signal which eliminates the phase cancellation of the ultrasonic pulses distributed over the face of the transducer assembly.
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